The term for snow on trees isn't always one specific thing; it depends on the type of snow/ice and how it forms. However, common terms include rime ice and, in some cases, hoarfrost.
Rime Ice
Rime ice is likely what you're thinking of when you picture snow clinging to trees. It forms when supercooled water droplets in fog or mist freeze onto tree branches and other exposed objects. The ice crystals build up on the windward side, creating a feathery or crystalline appearance.
Hoarfrost
Hoarfrost is similar to rime ice, but it forms in a different way. Instead of freezing water droplets, hoarfrost develops when water vapor in the air freezes directly onto a surface. This can also happen on trees, creating a delicate, crystalline coating. Think of it as frost, but on a larger scale and appearing on vertical surfaces like tree branches. It requires clear skies and calm winds.
Other Related Terms
While not specifically the name for snow on trees, other related terms describe the conditions and appearance:
- Glaze Ice (or Freezing Rain): This is supercooled rain that freezes on contact with surfaces, including trees. It creates a smooth, transparent coating of ice.
- Snow Accumulation: This is simply the general term for snow that has accumulated on tree branches.
In summary, depending on the conditions, snow or ice on trees can be called rime ice, hoarfrost, or may simply be described as snow accumulation. The specific term depends on how the ice formed.
